12.5 sec in total
839 ms
11.1 sec
510 ms
Welcome to alean.cn homepage info - get ready to check Alean best content right away, or after learning these important things about alean.cn
艾礼安是一家以报警为核心的智慧消防和物联传感解决方案提供商,主要生产销售激光对射、脉冲电子围栏、张力电子围栏、振动光纤、泄漏电缆、校园一键报警设备、报警主机、防爆探测设备、火灾烟雾报警器、燃气泄漏报警器等,产品广泛应用在城市管廊、平安校园、智能楼宇、企业园区等场合
Visit alean.cnWe analyzed Alean.cn page load time and found that the first response time was 839 ms and then it took 11.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
alean.cn performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value9.1 s
1/100
25%
Value19.5 s
0/100
10%
Value4,650 ms
0/100
30%
Value0.248
50/100
15%
Value19.7 s
2/100
10%
839 ms
1044 ms
225 ms
444 ms
474 ms
Our browser made a total of 76 requests to load all elements on the main page. We found that 83% of them (63 requests) were addressed to the original Alean.cn, 3% (2 requests) were made to Hm.baidu.com and 3% (2 requests) were made to Sgoutong.baidu.com. The less responsive or slowest element that took the longest time to load (6.2 sec) belongs to the original domain Alean.cn.
Page size can be reduced by 324.7 kB (4%)
8.4 MB
8.1 MB
In fact, the total size of Alean.cn main page is 8.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 8.1 MB which makes up the majority of the site volume.
Potential reduce by 58.7 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 22.1 kB, which is 33% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 58.7 kB or 87% of the original size.
Potential reduce by 195.7 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Alean images are well optimized though.
Potential reduce by 67.2 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 67.2 kB or 35% of the original size.
Potential reduce by 3.1 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Alean.cn has all CSS files already compressed.
Number of requests can be reduced by 28 (38%)
73
45
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alean. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
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swiper.min.css
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alean.cn accessibility score
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
alean.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
alean.cn SEO score
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
ZH
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alean.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Alean.cn main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
alean.cn
Open Graph description is not detected on the main page of Alean. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: